This data set was acquired with a Sea-Bird Electronics SBE-911+ CTD during R/V Laurence M. Gould expedition LMG1704 conducted in 2017 (Chief Scientist: Dr. Elizabeth Shadwick, Investigator: Dr. Elizabeth Shadwick). These data files are of Sea-Bird CTD format and include Conductivity, Pressure and Temperature data that were processed after acquisition. Data were acquired as part of the project(s): Resolving CO2 System Seasonality in the West Antarctic Peninsula with Autonomous Observations. Funding was provided by NSF award(s): PLR15-43380.